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Manufacturing Engineer, EOL & Electrical Diagnosis

Garden Grove, CA

About Harbinger

Harbinger is an American commercial electric vehicle (EV) company on a mission to transform an industry starving for innovation. Harbinger’s best-in-class team of EV, battery, and drivetrain experts have pooled their deep experience to bring a first-of-its-kind EV platform to support the growing demand for medium-duty EVs and Hybrids. Harbinger: Familiar Form, Revolutionary Foundation.

Job Summary:

As an End-of-Line (EOL) Diagnostics Engineer, you will play a critical role in assuring Quality in the final stage of vehicle manufacturing. You will be part of the team performing, troubleshooting vehicles and executing all the End of Line tests ensuring that every vehicle leaving the line meets our high standards. Your work will directly influence vehicle quality, reliability, and customer satisfaction.

What You'll Do:

  • Vehicle Diagnostics 
  • Execute complete End of Line Procedures
  • Perform root cause analysis and resolution of electrical, mechanical, and software issues discovered during end-of-line testing and bring-up.
  • Lead and support rework operations, including defining rework instructions, verifying fix effectiveness, and closing issues in tracking systems.
  • Flash software (on vehicle and on bench), execute system calibrations with UDS protocol, and validate critical vehicle functions during initial vehicle power-up.
  • Diagnose issues across all vehicle domains—powertrain, chassis, thermal, infotainment, ADAS, body, and network communication systems.
  • Collaborate cross-functionally with Manufacturing, Quality, and Engineering teams to escalate systemic issues and ensure alignment on resolution paths.
  • Use diagnostic tools, log analysis, and CAN data interpretation (CAN Trace)  to troubleshoot complex multi-system failures.
  • Create clear, concise issue reports and failure documentation to support rapid engineering triage and closure.
  • Drive implementation of short-term containment measures and contribute to long-term design and process improvements.
  • Develop, maintain, and improve end-of-line diagnostic workflows, test scripts, and validation tools.

Who You Are:

  • Bachelor’s degree in Mechanical, Electrical, Automotive, or Mechatronics Engineering—or equivalent hands-on experience.
  • Ideally 5+ years of experience in vehicle diagnostics, end-of-line testing, or integration.
  • Solid understanding of vehicle architecture and systems integration (CAN, LIN, Ethernet, high-voltage systems, etc.).
  • Proficiency with diagnostic, testing and vehicle communication tools (e.g., CANalyzer, CANoe, UDS protocol, etc).
  • Experience documenting and managing rework processes and reflash procedures in a manufacturing or prototyping environment.
  • Strong troubleshooting, problem-solving, and cross-functional communication skills.
  • Ability to thrive in a dynamic, build-focused, fast-paced startup environment.
Key Benefits & Perks:
  • Comprehensive Health, Dental & Vision (HDV) – 100% employee covered
  • Early-stage Stock Options
  • Robust Retirement Savings (401k, HSA, FSA)
  • Generous Paid Time Off (PTO) & Parental Leave
  • Annual Vacation Bonus
  • Wellness & Fertility Benefits
  • Cell Phone Stipend
  • Complimentary Meals & Stocked Kitchens

California Pay Range

$120,000 - $160,000 USD

Equal Opportunity
Harbinger is an equal opportunity employer and complies with all applicable federal, state, and local fair employment practices laws. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, ancestry, sex, sexual orientation, gender, gender expression, gender identity, genetic information or characteristics, physical or mental disability, marital/domestic partner status, age, military/veteran status, medical condition, or any other characteristic protected by law.
 
Harbinger is committed to ensuring that our hiring process is accessible for persons with disabilities. If you have a disability or limitation, such as those covered by the Americans with Disabilities Act, that requires accommodations to assist you in the search and application process, please email us at info@harbingermotors.com.
 
Candidate Data Privacy
Harbinger may collect, use and disclose your personal information or personal data (within the meaning of the applicable data protection laws) when you apply for employment and/or participate in our recruitment processes (“Candidate Personal Data”). This data includes contact, demographic, communications, educational, professional, employment, social media/website, network/device, recruiting system usage/interaction, security and preference information. Harbinger may use your Candidate Personal Data for the purposes of (i) tracking interactions with our recruiting system; (ii) carrying out, analyzing and improving our application and recruitment process, including assessing you and your application and conducting employment, background and reference checks; (iii) establishing an employment relationship or entering into an employment contract with you; (iv) complying with our legal, regulatory and corporate governance obligations; (v) recordkeeping; (vi) ensuring network and information security and preventing fraud; and (vii) as otherwise required or permitted by applicable law.
 
Harbinger may share your Candidate Personal Data with (i) internal personnel who have a need to know such information in order to perform their duties, including individuals on our HR, legal, and finance teams, and the team(s) with the position(s) for which you are applying; (ii) Harbinger affiliates; and (iii) Harbinger’s service providers, including providers of background checks, staffing services, and cloud services.
 
Harbinger may transfer or store internationally your Candidate Personal Data, including to or in the United States, Canada, the United Kingdom, and the European Union and in the cloud, and this data may be subject to the laws and accessible to the courts, law enforcement and national security authorities of such jurisdictions.
 
Please note that we are currently not accepting applications from third party application services. Any unsolicited resumes or candidate profiles submitted in response to our job posting shall be considered the property of Harbinger and are not subject to payment of referral or placement fees if any such candidate is later hired by Harbinger unless you have a signed written agreement in place with us which covers the applicable job posting.

 

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